Rock Joints Detection from 3D Point Clouds Based on Color Space

IF 1.3 4区 工程技术 Q3 ENGINEERING, GEOLOGICAL Quarterly Journal of Engineering Geology and Hydrogeology Pub Date : 2023-07-05 DOI:10.1144/qjegh2023-012
Yunfeng Ge, Bei Cao, Qianwang Chen, Yu Wang
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引用次数: 1

Abstract

To facilitate the automation accuracy of rock joint mapping, a new method based on color space was proposed for the semi-automatic identification and orientation calculation of rock joints. The developed method in this study comprises four-step: (1) the point color space and point curvature were calculated based on the point normal and xyz-coordinates respectively; (2) the rock joint sets were identified from point clouds based on the difference in point color space and point curvature; (3) each single rock joint was extracted from the aforementioned joint sets using a density-based spatial clustering of applications with noise (DBSCAN); and (4) the orientation was determined according to the point normals of the fitting planes of the points on each detected rock joint. A dodecahedron was used to demonstrate the procedures of rock joint detection and orientation calculation, and two outcrop cases were selected to further verify the effectiveness of the proposed method. The results of all cases indicate that the orientation difference between manual measurement and the proposed method was less than 2°. The codes that support the findings of this study are publicly shared on GitHub ( https://github.com/DisDet/DisDetCIELAB ).
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基于颜色空间的三维点云岩石节理检测
为了提高岩石节理成图的自动化精度,提出了一种基于颜色空间的岩石节理半自动识别和方位计算新方法。本研究开发的方法包括四个步骤:(1)分别基于点法线和xyz坐标计算点颜色空间和点曲率;(2) 基于点颜色空间和点曲率的差异,从点云中识别岩石节理集;(3) 使用具有噪声的应用程序的基于密度的空间聚类(DBSCAN)从上述节理集中提取每个单个岩石节理;以及(4)根据每个检测到的岩石节理上的点的拟合平面的点法线来确定方位。使用十二面体演示了岩石节理探测和方位计算的程序,并选择了两个露头实例来进一步验证所提出方法的有效性。所有情况的结果表明,手动测量和所提出的方法之间的方位差小于2°。支持这项研究结果的代码在GitHub上公开分享(https://github.com/DisDet/DisDetCIELAB)。
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来源期刊
CiteScore
3.40
自引率
14.30%
发文量
66
审稿时长
6 months
期刊介绍: Quarterly Journal of Engineering Geology and Hydrogeology is owned by the Geological Society of London and published by the Geological Society Publishing House. Quarterly Journal of Engineering Geology & Hydrogeology (QJEGH) is an established peer reviewed international journal featuring papers on geology as applied to civil engineering mining practice and water resources. Papers are invited from, and about, all areas of the world on engineering geology and hydrogeology topics. This includes but is not limited to: applied geophysics, engineering geomorphology, environmental geology, hydrogeology, groundwater quality, ground source heat, contaminated land, waste management, land use planning, geotechnics, rock mechanics, geomaterials and geological hazards. The journal publishes the prestigious Glossop and Ineson lectures, research papers, case studies, review articles, technical notes, photographic features, thematic sets, discussion papers, editorial opinion and book reviews.
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